Auxiliary trolley device.



-W. J. DAVIS.

AUXILIARY TROLLEY DEVICE.

APPLICATION FILED FEB. 10, 1915.

Patented Sept. 5, 1916.

2 SHEETS-SHEET I.

W. J. DAVIS AUXILIARY TROLLEY DEVICE.

APPLICATION map FEB. 10. 1915.

l ,1 9?, 1 Patented Sept. 5, 19 16.

2 SHEETS-SHEET 2.

new in.

WILLIAM J. DAVIS, 0F WINDFALL, INDIANA, ASSIGNOR OF ONE-HALF 'IO ELI/[ER P. SCHELL, OF WINDFALL, INDIANA.

AUXILIARY TRQLLEY DEVICE.

11,159? ,lltlS.

Specification of Letters Patent.

. Patented dept. 5, 19165.

Application filed February 10, 1915. Serial No. 7,447.

To all whom it may concern Be it known that I, l/VILLIAM J. DAVIS,

My invention relates to that particular 7 class of electrical conductors for trolley cars in which the trolley poles are equipped with not only a principal trolley wheel for effecting a proper contact of the electrical wire, but an auxiliary wheel by which the wire may be cleared of incrustations of ice, sleet, etc., immediately prior to passage of said principal wheel thereover, the object of the invention being to effect a more thorough clearing of the wire from said incrustations of ice and sleet; to reduce the cost of construction; to render the device more efficient, while at the same time the construction remains simple, durable and strong; and to procure other advantages and results, certain of which may be referred to hereinafter in connection with the description of the working parts.

The invention consists in the improved trolley pole attachment and its appliances together with the arrangement and combination of parts all substantially as will be hereinafter referred to and particularly pointed out in the appended claims.

In describing my invention in detail reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side elevation of an ordinary trolley pole equipped with my improved auxiliary contact or device; Fig. 2 is a top plan view of the said auxiliary contact, partly broken away; Fig. 3 is a View in cross section of the auxiliary contact wheel; Fig. a is a view in section illustrating the spring device operating to maintain the auxiliary contact wheel in yielding engagement with the trolley wire; Fig. 5 is a section on the line 5-5 of Fig. 1; and Fig.6 is a detail elevation of one of the cleaning brushes and its support.

Referring now to the drawings by numerals, 1 designates a trolley pole, 2 a trolley wheel, and 3 the trolley wire engaged by said wheel. The foregoing is shown only for the purpose of exemplifying the application of the present invention.

The auxiliary trolley contact device in its preferred embodiment includes a suitable clamp made sectional to provide a stationary clamp section t and a relatively movable clamp section 5, the latter having a hinged connection with the former as indicated at 6 whereby to be mounted on and removed from the trolley pole. 1. Any suitable fastening means such as indicated at 7 may be provided to maintain the clamp against longitudinal movement on the said pole subsequent to adjustment thereon. As shown, the clamp is adjusted to a point in adjacent proximity to the trolley wheel 2. The clamp section f is extended beyond the hinged pointjl and enlarged to form a cylindrical head or casing S, the respective terminals of said casing being interiorly threaded and open whereby to receive suitable caps or closure devices 9. z

A support rod 10 extends longitudinally of the casing 8 and as shown concentric thereto, the respective terminals of the said rod 10 being keyed or otherwise fastened to the closure devices 9. Said rod 10 acts as a support for an arm 11, the latter penetrating the casing 8 and operating in an arcuate slot or opening 12 therefor formed at a point diametrically opposite-to the clamp aforesaid.

Arm 11 is enlarged at its inner end as indicated at 12, the rod 10 penetrating the enlargement as shown. A suitably tensioned helical spring 13 is arranged within the casing 8, one end of the spring being fastened as at It to the closure device 9 at one end of the casing or head 8 and the opposite end being fastened as at 15 in a similar manner to the closure device 9 at the opposite end of the cylindrical head. The said spring 13, intermediate its ends, is separated, that portion of the spring connecting the spring sections formed by the separation aforesaid being designated 16 and arranged beneath the arm 11, to at all times exert an upper pressure thereon whereby to maintain the auxiliary contact device, as will hereinafter appear, in the desired yielding engagement with the wire 3.

cumulate on the wire '3.

W hat may be termed a working bar, designated as an entirety by the numeral 17, is made fast to the extended portion of the arm 11 as indicated at 18, said bar 17 being of a horizontally flat type and provided with an elongated opening 19 Within which opening the auxiliary contact wheel 20 is arranged. Wheel 20 is mounted on a suitable spindle 21 provided therefor. The periphery of the wheel 20 is grooved to positively engage wire 3, the flanges formed by the peripherial groove maintaining said wheel against lateral displacement when in use. Cutting ribs or ridges 22 are formed on the periphery of wheel 20 at properly spaced intervals to engage and cut all incrustations of ice and sleet that might ac- Openings 23 are formed in the flanges formed by the peripheral groove aforesaid, the several openings providing for the escape of the ice particles cut and loosened by the engagement of the ribs or ridges 22 with the wire. The openings will prevent the lodgment of the ice particles within the groove and upon the adjacent faces of the flanges formed on the wheel.

As a positive cleaning means, I provide a brush member 24 which is adapted for direct engagement with the wire 3 immediately at the rear of the wheel 20, the bristles of the brush being of the metal type. The brush 24 may be adjusted vertically or toward and from the wire 3 through manipulation of a thumb screw 25 provided therefor.

As a means to positively clean the periphery of the wheelI provide a second brush member 26, the said brush being arranged forwardly of the wheel as shown and supported at an angle thereto as indicated to advantage in Fig. 1, the support means being in the nature of a depending support rod 27 adjustable vertically relatively to the bar 17 through manipulation of a thumb screw 28. The angular adjustment of the brush 26 may be effected through manipulation of a thumb screw 29.

In operation it is evident that the incrustation of ice on'the wire 3 will be cut and loosened by the yielding engagement of the auxiliary contact wheel 20 therewith, the spring 13' maintaining the wheel in the desired yielding contact with the wire. As the said wheel 20 is rotated in the advancement of the trolley car, the brushes 24: and 26 willoperate to engage respectively the wire 3 and the wheel 20, the former brush cleaning the wire of the incrustations of ice dislodged by the wheel and the latter brush cleaning the periphery of the wheel of all adhering particles of'ice.

From the foregoing, taken in connection with the accompanying drawings it is evident that the device or attachment may be adjusted longitudinally of the trolley pole 1, such adjustment providing for a variation of the spring tension generated through action of spring- 13; that by arranging the auxiliary contact wheel-in advance of the trolley wheel2, the latter is made to engage the wire 3 subsequent to a cleaning thereof; and that the arrangement of the springs as shown to advantage in Fig. 4 is such in its nature as to completely house or incase the means provided primarily for holding the entire device in the desired yielding engagement with the wire 3.

In reduction to practice, I have found that the form of my invention, illustrated in the drawings and referred to in the above description, as the preferred embodiment, is the most eflicient and practical; yet realizing that the conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasize the fact that various minor changes in details of construction, proportion and arrangement of parts may be resorted to, when required, without sacriicing any of the advantages of my invention, as defined in the appended claims.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A device for removing incrustations of ice from a trolley wire including a cutting wheel mounted to engage with said wire in advance of the trolley wheel, said cutting wheel being provided with a relatively deep peripheral groove, that portion of said wheel at each side of the groove being provided with openings through which incrustations of ice are free to pass, ribs extending transversely across the periphery of said wheel to cut and loosen the ice, and a brush mounted to yieldingly contact with the periphery of said wheel to remove all ice temporarily adhering thereto.

2. A device for removing incrustations of ice from a trolley wire including a cutting wheel mounted to engage with said wire in advance of the trolley wheel, ribs extending across the periphery of said cutting wheel to forcibly contact the trolley wire, a support for said cutting wheel, a member adjustable relatively to said support, and a brush carried by said member and adjustable relatively thereto, said brush being adapted for yielding contact with the periphery of the wheel to remove incrustations adhering thereto.

3. A device for removing incrustations of ice from a trolley wire including a cutting wheel mounted to engage with said wire in advance of the trolley wheel, said cutting wheel being provided with a peripheral groove, that portion of said wheel at each side of said groove being provided with openings through which incrustations are free to pass, ribs formed upon the periphery of said Wheel to cut and loosen the ice, and

lot:

means mounted to yieldingly contact with the periphery of said wheel to remove all ice temporarily adhering thereto.

4. In a device for removing the incrustations of ice on a trolley wire, the combination with the trolley pole and the trolley wheel, of a clamp adjustable longitudinally of the pole, a casing carried by the clamp, a rod extending concentrically through said casing, said casing having an opening formed therein, an arm mounted for movement on the rod and projecting through said opening, a spring arranged within the casing and engaging the arm to normally 7 exert an upward pressure thereon, a supporting bar rigid with the arm, a cutting wheel carried by said supporting bar and adapted for engagement with the wire in advance of the trolley wheel, a brush member carried by said bar to engage the wire at the rear of said cutting wheel, and a second brush device carried by said bar to engage the wheel for the purpose specified.

5. In a device for removing the incrustations of ice on a trolley wire, the combination with the trolley pole and the trolley wheel, of an auxiliary contact wheel operating in advance of the trolley wheel, said device comprising a clamp member adjustable longitudinally of the trolley pole, an open end cylindrical casing formed integrally with the clamp, closure devices removably fastened to the respective casing terminals, a rod connecting the closure devices and extending concentrically throughout the length of said casing, an arm carried by said rod and penetrating the casing, a spring device fastened at its respective ends to the closure devices aforesaid and adapted for engagement with said arm to normally exert upward pressure thereon, a support bar fastened to the arm, a cutting wheel carried by said support bar and adapted for direct engagement with the trolley wire to cut the incrustations of ice thereon, an adjustable brush member carried by said bar and disposed for engagement with the wire at the rear of said wheel to dislodge the incrustations of ice cut by said wheel, and a second brush device carried by said bar and adapted for engagement with the wheel to dislodge the incrustations of ice adhering thereto, the spring member aforesaid maintaining the cutting Wheel in yielding engagement with the wire for the purpose specified.

In testimony whereof I aiiix my signature in presence of two witnesses.

WVILLIAM J DAVIS. Witnesses:

GEORGE WHEISUE, JOHN CLoUsER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

